application/vnd.api+json forced on JSONAPI Adapter

[Benjy1979]

I've updated to 3.10 and it seems now my content-type set in the model adapter is being ignored.
No matter what I set it to the request uses:
application/vnd.api+json

If I throw other headers in there, like access_token, it works. So the headers() property is being noted, it's just the content-type is being ignored or overwritten.

headers: computed('webusers.access_token', function() { return { 'Content-Type': 'application/json', 'x-access-token': this.get('webusers.access_token') }; }),

The x-access-token will be in the request but he content-type still goes through as application/vnd.api+json.

[rwjblue]

This is Ember's own issue tracker, but this seems like an issue (that has already been fixed) in ember-data.

I believe that you are hitting emberjs/data#6058 (affected both Accept and Content-Type) which was fixed in emberjs/data#6062 and is included in ember-data@3.9.2 and higher.

Can you double check your ember-data version (making sure its at least 3.9.2), and if it's 3.9.2 or higher file an issue over in ember-data (cross linking to this one)?